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<div class="title">base_camera.cpp</div>  </div>
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<a href="base__camera_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;﻿ </div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;</div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="preprocessor">#ifdef WIN32 </span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="__gbmath_8h.html" title="MAIN INCLUDE HEADER. ">_gbmath.h</a>&quot;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;</div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="keyword">namespace </span>gbmath </div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;{</div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160; </div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160; </div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;</div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;base_camera::base_camera(<span class="keywordtype">bool</span> cameraLeftHandle) : m_bcameraLeftHandle(cameraLeftHandle)</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;{</div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;    m_hwnd = 0;</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;    m_cKeysDown = 0;</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;    ZeroMemory( m_aKeys, <span class="keyword">sizeof</span>(BYTE)*CAM_MAX_KEYS );</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;    <span class="comment">// Set attributes for the view matrix</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;    vec3 vEyePt    = vec3(0.0f,0.0f,0.0f);</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    vec3 vLookatPt = vec3(0.0f,0.0f,1.0f);</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;    <span class="comment">// Setup the view matrix</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    setViewParams( vEyePt, vLookatPt );</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    <span class="comment">// Setup the projection matrix</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">float</span> _PI_DIV4  =  3.141592654f / 4.0f;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    setProjParams(  _PI_DIV4  , 1.0f, 1.0f, 1000.0f );</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    GetCursorPos( &amp;m_ptLastMousePosition );</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    m_bMouseLButtonDown = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    m_bMouseMButtonDown = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    m_bMouseRButtonDown = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    m_nCurrentButtonMask = 0;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    m_nMouseWheelDelta = 0;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    m_fCameraYawAngle = 0.0f;</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    m_fCameraPitchAngle = 0.0f;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    SetRect( &amp;m_rcDrag, LONG_MIN, LONG_MIN, LONG_MAX, LONG_MAX );</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    m_vVelocity     = vec3(0,0,0);</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    m_bMovementDrag = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    m_vVelocityDrag = vec3(0,0,0);</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    m_fDragTimer    = 0.0f;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    m_fTotalDragTimeToZero = 0.25;</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    m_vRotVelocity = vec2(0,0);</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    m_fRotationScaler = 0.01f;           </div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    m_fMoveScaler = 5.0f;           </div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    m_bInvertPitch = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    m_bEnableYAxisMovement = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    m_bEnablePositionMovement = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    m_vMouseDelta   = vec2(0,0);</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    m_fFramesToSmoothMouseData = 2.0f;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    m_bClipToBoundary = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    m_vMinBoundary = vec3(-1,-1,-1);</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    m_vMaxBoundary = vec3(1,1,1);</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;}</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="keywordtype">void</span> base_camera::setViewParams( <span class="keyword">const</span> vec3&amp; pvEyePt, <span class="keyword">const</span> vec3&amp; pvLookatPt)</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;{</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    m_vDefaultEye = m_vEye = pvEyePt;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    m_vDefaultLookAt = m_vLookAt = pvLookatPt;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <span class="comment">// Calc the view matrix</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    vec3 vUp(0,1,0);</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160; </div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    <span class="keywordflow">if</span> (m_bcameraLeftHandle)       </div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    {</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;     m_mView.setViewLookAtLH(pvEyePt, pvLookatPt, vUp );</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    }</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    {</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;     m_mView.setViewLookAtRH(pvEyePt, pvLookatPt, vUp );</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    }</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    mat44 mInvView;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;   <span class="comment">// D 3DX MatrixInverse( mInvView, NULL, m_mView );</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    mInvView   =  m_mView.inverted();</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    <span class="comment">// The axis basis vectors and camera position are stored inside the </span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    <span class="comment">// position matrix in the 4 rows of the camera&#39;s world matrix.</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    <span class="comment">// To figure out the yaw/pitch of the camera, we just need the Z basis vector</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    vec3* pZBasis = (vec3*) &amp;mInvView._31;</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    m_fCameraYawAngle   = atan2f( pZBasis-&gt;x, pZBasis-&gt;z );</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    <span class="keywordtype">float</span> fLen = sqrtf(pZBasis-&gt;z*pZBasis-&gt;z + pZBasis-&gt;x*pZBasis-&gt;x);</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    m_fCameraPitchAngle = -atan2f( pZBasis-&gt;y, fLen );</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;}</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="keywordtype">void</span> base_camera::setProjParams( <span class="keywordtype">float</span> fFOV, <span class="keywordtype">float</span> fAspect, <span class="keywordtype">float</span> fNearPlane,  <span class="keywordtype">float</span> fFarPlane )</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;{</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    <span class="comment">// Set attributes for the projection matrix</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    m_fFOV        = fFOV;</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    m_fAspect     = fAspect;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    m_fNearPlane  = fNearPlane;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    m_fFarPlane   = fFarPlane;</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160; </div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;     <span class="keywordflow">if</span> (m_bcameraLeftHandle)</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;     {</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;         m_mProj.setPerspectiveFovLH( fFOV, fAspect, fNearPlane, fFarPlane);</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;     }</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;     <span class="keywordflow">else</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;     {</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;         m_mProj.setPerspectiveFovRH( fFOV, fAspect, fNearPlane, fFarPlane);</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;     }</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;}</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160; </div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;LRESULT base_camera::handleMessages( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;{</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    m_hwnd = hWnd;</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    UNREFERENCED_PARAMETER( hWnd );</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    UNREFERENCED_PARAMETER( lParam );</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    <span class="keywordflow">switch</span>( uMsg )</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    {</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        <span class="keywordflow">case</span> WM_KEYDOWN:</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        {</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;            <span class="comment">// Map this key to a CameraKeys enum and update the</span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;            <span class="comment">// state of m_aKeys[] by adding the KEY_WAS_DOWN_MASK|KEY_IS_DOWN_MASK mask</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;            <span class="comment">// only if the key is not down</span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;            <span class="keywordflow">if</span>(wParam == 27)</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;            {</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;              <span class="keywordtype">int</span> _stop = 0;</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;            }</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;            CameraKeys mappedKey = mapKey( (UINT)wParam );</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;            <span class="keywordflow">if</span>( mappedKey != CAM_UNKNOWN )</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;            {</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;                <span class="keywordflow">if</span>( FALSE == isKeyDown(m_aKeys[mappedKey]) )</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;                {</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;                    m_aKeys[ mappedKey ] = KEY_WAS_DOWN_MASK | KEY_IS_DOWN_MASK;</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;                    ++m_cKeysDown;</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;                }</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;            }</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;        }</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        <span class="keywordflow">case</span> WM_KEYUP:</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        {</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;            <span class="comment">// Map this key to a CameraKeys enum and update the</span></div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;            <span class="comment">// state of m_aKeys[] by removing the KEY_IS_DOWN_MASK mask.</span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;            CameraKeys mappedKey = mapKey( (UINT)wParam );</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;            <span class="keywordflow">if</span>( mappedKey != CAM_UNKNOWN &amp;&amp; (DWORD)mappedKey &lt; 8 )</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;            {</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;                m_aKeys[ mappedKey ] &amp;= ~KEY_IS_DOWN_MASK;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;                --m_cKeysDown;</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;            }</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        }</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;        <span class="keywordflow">case</span> WM_RBUTTONDOWN:</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;        <span class="keywordflow">case</span> WM_MBUTTONDOWN:</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;        <span class="keywordflow">case</span> WM_LBUTTONDOWN:</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;        <span class="keywordflow">case</span> WM_RBUTTONDBLCLK:</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;        <span class="keywordflow">case</span> WM_MBUTTONDBLCLK:</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;        <span class="keywordflow">case</span> WM_LBUTTONDBLCLK:</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;        {</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;            <span class="comment">// Compute the drag rectangle in screen coord.</span></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;            POINT ptCursor = { (short)LOWORD(lParam), (short)HIWORD(lParam) };</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;            <span class="comment">// Update member var state</span></div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;            <span class="keywordflow">if</span>( ( uMsg == WM_LBUTTONDOWN || uMsg == WM_LBUTTONDBLCLK ) &amp;&amp; PtInRect( &amp;m_rcDrag, ptCursor ) )</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;            { </div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;                m_bMouseLButtonDown = <span class="keyword">true</span>; m_nCurrentButtonMask |= MOUSE_LEFT_BUTTON; </div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;            }</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;            <span class="keywordflow">if</span>( ( uMsg == WM_MBUTTONDOWN || uMsg == WM_MBUTTONDBLCLK ) &amp;&amp; PtInRect( &amp;m_rcDrag, ptCursor ) )</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;            { </div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;                m_bMouseMButtonDown = <span class="keyword">true</span>; m_nCurrentButtonMask |= MOUSE_MIDDLE_BUTTON; </div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;            }</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;            <span class="keywordflow">if</span>( ( uMsg == WM_RBUTTONDOWN || uMsg == WM_RBUTTONDBLCLK ) &amp;&amp; PtInRect( &amp;m_rcDrag, ptCursor ) )</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;            { </div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;                m_bMouseRButtonDown = <span class="keyword">true</span>; m_nCurrentButtonMask |= MOUSE_RIGHT_BUTTON; </div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;            }</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;            <span class="comment">// Capture the mouse, so if the mouse button is </span></div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;            <span class="comment">// released outside the window, we&#39;ll get the WM_LBUTTONUP message</span></div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;            SetCapture(hWnd);</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;            GetCursorPos( &amp;m_ptLastMousePosition );</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;            <span class="keywordflow">return</span> TRUE;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;        }</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;        <span class="keywordflow">case</span> WM_RBUTTONUP: </div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        <span class="keywordflow">case</span> WM_MBUTTONUP: </div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;        <span class="keywordflow">case</span> WM_LBUTTONUP:   </div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;        {</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;            <span class="comment">// Update member var state</span></div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;            <span class="keywordflow">if</span>( uMsg == WM_LBUTTONUP ) </div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;            { </div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;                m_bMouseLButtonDown = <span class="keyword">false</span>; m_nCurrentButtonMask &amp;= ~MOUSE_LEFT_BUTTON; </div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;            }</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;            <span class="keywordflow">if</span>( uMsg == WM_MBUTTONUP ) </div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;            { </div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;                m_bMouseMButtonDown = <span class="keyword">false</span>; m_nCurrentButtonMask &amp;= ~MOUSE_MIDDLE_BUTTON; </div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;            }</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;            <span class="keywordflow">if</span>( uMsg == WM_RBUTTONUP ) </div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;            { </div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;                m_bMouseRButtonDown = <span class="keyword">false</span>; m_nCurrentButtonMask &amp;= ~MOUSE_RIGHT_BUTTON; </div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;            }</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;            <span class="comment">// Release the capture if no mouse buttons down</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;            <span class="keywordflow">if</span>( !m_bMouseLButtonDown  &amp;&amp; </div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;                !m_bMouseRButtonDown &amp;&amp;</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;                !m_bMouseMButtonDown )</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;            {</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;                ReleaseCapture();</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;            }</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;        }</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;        <span class="keywordflow">case</span> WM_CAPTURECHANGED:</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;        {</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;            <span class="keywordflow">if</span>( (HWND)lParam != hWnd )</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;            {</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;                <span class="keywordflow">if</span>( (m_nCurrentButtonMask &amp; MOUSE_LEFT_BUTTON) ||</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;                    (m_nCurrentButtonMask &amp; MOUSE_MIDDLE_BUTTON) ||</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;                    (m_nCurrentButtonMask &amp; MOUSE_RIGHT_BUTTON) )</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;                {</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;                    m_bMouseLButtonDown = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;                    m_bMouseMButtonDown = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;                    m_bMouseRButtonDown = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;                    m_nCurrentButtonMask &amp;= ~MOUSE_LEFT_BUTTON;</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;                    m_nCurrentButtonMask &amp;= ~MOUSE_MIDDLE_BUTTON;</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;                    m_nCurrentButtonMask &amp;= ~MOUSE_RIGHT_BUTTON;</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;                    ReleaseCapture();</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;                }</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;            }</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;        }</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;        <span class="keywordflow">case</span> WM_MOUSEWHEEL: </div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;            <span class="comment">// Update member var state</span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;            m_nMouseWheelDelta = (short)HIWORD(wParam) / 120;</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    }</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;    <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;}</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="keywordtype">void</span> base_camera::getInput( <span class="keywordtype">bool</span> bGetKeyboardInput, <span class="keywordtype">bool</span> bGetMouseInput, </div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;                           <span class="keywordtype">bool</span> bGetGamepadInput, <span class="keywordtype">bool</span> bResetCursorAfterMove )</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;{</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;    m_vKeyboardDirection = vec3(0,0,0);</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;    <span class="keywordflow">if</span>( bGetKeyboardInput )</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;    {</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;        <span class="comment">// Update acceleration vector based on keyboard state</span></div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;        <span class="keywordflow">if</span>( isKeyDown(m_aKeys[CAM_MOVE_FORWARD]) )</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;            m_vKeyboardDirection.z += 1.0f;</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;        <span class="keywordflow">if</span>( isKeyDown(m_aKeys[CAM_MOVE_BACKWARD]) )</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;            m_vKeyboardDirection.z -= 1.0f;</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;        <span class="keywordflow">if</span>( m_bEnableYAxisMovement )</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;        {</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;            <span class="keywordflow">if</span>( isKeyDown(m_aKeys[CAM_MOVE_UP]) )</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;                m_vKeyboardDirection.y += 1.0f;</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;            <span class="keywordflow">if</span>( isKeyDown(m_aKeys[CAM_MOVE_DOWN]) )</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;                m_vKeyboardDirection.y -= 1.0f;</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;        }</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;        <span class="keywordflow">if</span>( isKeyDown(m_aKeys[CAM_STRAFE_RIGHT]) )</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;            m_vKeyboardDirection.x += 1.0f;</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;        <span class="keywordflow">if</span>( isKeyDown(m_aKeys[CAM_STRAFE_LEFT]) )</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;            m_vKeyboardDirection.x -= 1.0f;</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;    }</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    <span class="keywordflow">if</span>( bGetMouseInput )</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;    {</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;        <span class="comment">// Get current position of mouse</span></div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        POINT ptCurMouseDelta;</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;        POINT ptCurMousePos;</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;        </div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;        <span class="keywordflow">if</span>( GetCursorPos( &amp;ptCurMousePos ) )</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;        {</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;            <span class="comment">// Calc how far it&#39;s moved since last frame</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;            ptCurMouseDelta.x = ptCurMousePos.x - m_ptLastMousePosition.x;</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;            ptCurMouseDelta.y = ptCurMousePos.y - m_ptLastMousePosition.y;</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;            </div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;            <span class="comment">// Record current position for next time</span></div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;            m_ptLastMousePosition = ptCurMousePos;</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;        }</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;        <span class="keywordflow">else</span></div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;        {</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;            <span class="comment">// If GetCursorPos() returns false, just set delta to zero</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;            ptCurMouseDelta.x = 0;</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;            ptCurMouseDelta.y = 0;</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;        }</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;        <span class="comment">// **************** REMOVED  ********* MONITOR INFO</span></div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;        <span class="comment">// if( bResetCursorAfterMove &amp;&amp; TRUE) // ks777 MYUTIsActive() )</span></div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;<span class="comment">/*         {</span></div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;<span class="comment">            // Set position of camera to center of desktop, </span></div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;<span class="comment">            // so it always has room to move.  This is very useful</span></div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;<span class="comment">            // if the cursor is hidden.  If this isn&#39;t done and cursor is hidden, </span></div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;<span class="comment">            // then invisible cursor will hit the edge of the screen </span></div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;<span class="comment">            // and the user can&#39;t tell what happened</span></div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;<span class="comment">            POINT ptCenter;</span></div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;<span class="comment">            a ssert(m_hwnd &amp;&amp; &quot;m_hwnd is zero&quot;);</span></div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;<span class="comment">            // Get the center of the current monitor</span></div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;<span class="comment">            MYMONITORINFO mi;</span></div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;<span class="comment">            mi.cbSize = sizeof(MONITORINFO);</span></div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;<span class="comment">            </span></div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;<span class="comment">            MYUTGetMonitorInfo( MYUTMonitorFromWindow( m_hwnd,MONITOR_DEFAULTTONEAREST), &amp;mi );</span></div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;<span class="comment">            ptCenter.x = (mi.rcMonitor.left + mi.rcMonitor.right) / 2;</span></div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;<span class="comment">            ptCenter.y = (mi.rcMonitor.top + mi.rcMonitor.bottom) / 2;   </span></div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;<span class="comment">            SetCursorPos( ptCenter.x, ptCenter.y );</span></div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;<span class="comment">            m_ptLastMousePosition = ptCenter;</span></div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;<span class="comment">        } */</span></div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160; </div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;        <span class="comment">// Smooth the relative mouse data over a few frames so it isn&#39;t </span></div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;        <span class="comment">// jerky when moving slowly at low frame rates.</span></div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;        <span class="keywordtype">float</span> fPercentOfNew =  1.0f / m_fFramesToSmoothMouseData;</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;        <span class="keywordtype">float</span> fPercentOfOld =  1.0f - fPercentOfNew;</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;        m_vMouseDelta.x = m_vMouseDelta.x*fPercentOfOld + ptCurMouseDelta.x*fPercentOfNew;</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;        m_vMouseDelta.y = m_vMouseDelta.y*fPercentOfOld + ptCurMouseDelta.y*fPercentOfNew;</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;    }</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;    <span class="keywordflow">if</span>( bGetGamepadInput )</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;    {</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;        m_vGamePadLeftThumb = vec3(0,0,0);</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;        m_vGamePadRightThumb = vec3(0,0,0);</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;      </div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;        <span class="comment">// Find out which controller was non-zero last</span></div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;        <span class="keywordtype">int</span> iMostRecentlyActive = -1;</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;        <span class="keywordtype">double</span> fMostRecentlyActiveTime = 0.0f;</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160; </div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;    }</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;}</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160; </div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;<span class="keywordtype">void</span> base_camera::updateVelocity( <span class="keywordtype">float</span> fElapsedTime )</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;{</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;    mat44 mRotDelta;</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;    vec2 vGamePadRightThumb = vec2(m_vGamePadRightThumb.x, -m_vGamePadRightThumb.z);</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;    m_vRotVelocity = m_vMouseDelta * m_fRotationScaler + vGamePadRightThumb * 0.02f;</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;    vec3 vAccel = m_vKeyboardDirection + m_vGamePadLeftThumb;</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;    <span class="comment">// Normalize vector so if moving 2 dirs (left &amp; forward), </span></div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;    <span class="comment">// the camera doesn&#39;t move faster than if moving in 1 dir</span></div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160; </div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;    <span class="comment">//D 3DX Vec3Normalize( vAccel, vAccel );</span></div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;      vAccel.normalize();</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160; </div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160; </div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;    <span class="comment">// Scale the acceleration vector</span></div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;    vAccel *= m_fMoveScaler;</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;    <span class="keywordflow">if</span>( m_bMovementDrag )</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;    {</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;        <span class="comment">// Is there any acceleration this frame?</span></div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;      <span class="comment">//if( D 3DX Vec3LengthSq( vAccel ) &gt; 0 )</span></div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;        <span class="keywordflow">if</span>( vAccel.length_sq() &gt; 0 )</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;        {</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;            <span class="comment">// If so, then this means the user has pressed a movement key\</span></div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;<span class="comment">            // so change the velocity immediately to acceleration </span></div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;            <span class="comment">// upon keyboard input.  This isn&#39;t normal physics</span></div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;            <span class="comment">// but it will give a quick response to keyboard input</span></div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;            m_vVelocity = vAccel;</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;            m_fDragTimer = m_fTotalDragTimeToZero;</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;            m_vVelocityDrag = vAccel / m_fDragTimer;</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;        }</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;        <span class="keywordflow">else</span> </div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;        {</div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;            <span class="comment">// If no key being pressed, then slowly decrease velocity to 0</span></div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;            <span class="keywordflow">if</span>( m_fDragTimer &gt; 0 )</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;            {</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;                <span class="comment">// Drag until timer is &lt;= 0</span></div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;                m_vVelocity -= m_vVelocityDrag * fElapsedTime;</div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;                m_fDragTimer -= fElapsedTime;</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;            }</div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;            {</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;                <span class="comment">// Zero velocity</span></div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;                m_vVelocity = vec3(0,0,0);</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;            }</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;        }</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;    }</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;    {</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;        <span class="comment">// No drag, so immediately change the velocity</span></div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;        m_vVelocity = vAccel;</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;    }</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;}</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160; </div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;<span class="keywordtype">void</span> base_camera::constrainToBoundary( vec3* pV )</div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;{</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;    <span class="comment">// Constrain vector to a bounding box </span></div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;    pV-&gt;x = __max(pV-&gt;x, m_vMinBoundary.x);</div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;    pV-&gt;y = __max(pV-&gt;y, m_vMinBoundary.y);</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;    pV-&gt;z = __max(pV-&gt;z, m_vMinBoundary.z);</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;    pV-&gt;x = __min(pV-&gt;x, m_vMaxBoundary.x);</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;    pV-&gt;y = __min(pV-&gt;y, m_vMaxBoundary.y);</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;    pV-&gt;z = __min(pV-&gt;z, m_vMaxBoundary.z);</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;}</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;</div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;CameraKeys base_camera::mapKey( UINT nKey )</div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;{</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;    <span class="comment">// This could be upgraded to a method that&#39;s user-definable but for </span></div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;    <span class="comment">// simplicity, we&#39;ll use a hardcoded mapping.</span></div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;    <span class="keywordflow">switch</span>( nKey )</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;    {</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;        <span class="keywordflow">case</span> VK_CONTROL:  <span class="keywordflow">return</span> CAM_CONTROLDOWN;</div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;        <span class="keywordflow">case</span> VK_LEFT:  <span class="keywordflow">return</span> CAM_STRAFE_LEFT;</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;        <span class="keywordflow">case</span> VK_RIGHT: <span class="keywordflow">return</span> CAM_STRAFE_RIGHT;</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;        <span class="keywordflow">case</span> VK_UP:    <span class="keywordflow">return</span> CAM_MOVE_FORWARD;</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;        <span class="keywordflow">case</span> VK_DOWN:  <span class="keywordflow">return</span> CAM_MOVE_BACKWARD;</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;        <span class="keywordflow">case</span> VK_PRIOR: <span class="keywordflow">return</span> CAM_MOVE_UP;        <span class="comment">// pgup</span></div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;        <span class="keywordflow">case</span> VK_NEXT:  <span class="keywordflow">return</span> CAM_MOVE_DOWN;      <span class="comment">// pgdn</span></div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;        <span class="keywordflow">case</span> <span class="charliteral">&#39;A&#39;</span>:      <span class="keywordflow">return</span> CAM_STRAFE_LEFT;</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;        <span class="keywordflow">case</span> <span class="charliteral">&#39;D&#39;</span>:      <span class="keywordflow">return</span> CAM_STRAFE_RIGHT;</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;        <span class="keywordflow">case</span> <span class="charliteral">&#39;W&#39;</span>:      <span class="keywordflow">return</span> CAM_MOVE_FORWARD;</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;        <span class="keywordflow">case</span> <span class="charliteral">&#39;S&#39;</span>:      <span class="keywordflow">return</span> CAM_MOVE_BACKWARD;</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;        <span class="keywordflow">case</span> <span class="charliteral">&#39;Q&#39;</span>:      <span class="keywordflow">return</span> CAM_MOVE_DOWN;</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;        <span class="keywordflow">case</span> <span class="charliteral">&#39;E&#39;</span>:      <span class="keywordflow">return</span> CAM_MOVE_UP;</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;        <span class="keywordflow">case</span> VK_NUMPAD4: <span class="keywordflow">return</span> CAM_STRAFE_LEFT;</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;        <span class="keywordflow">case</span> VK_NUMPAD6: <span class="keywordflow">return</span> CAM_STRAFE_RIGHT;</div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;        <span class="keywordflow">case</span> VK_NUMPAD8: <span class="keywordflow">return</span> CAM_MOVE_FORWARD;</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;        <span class="keywordflow">case</span> VK_NUMPAD2: <span class="keywordflow">return</span> CAM_MOVE_BACKWARD;</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;        <span class="keywordflow">case</span> VK_NUMPAD9: <span class="keywordflow">return</span> CAM_MOVE_UP;        </div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;        <span class="keywordflow">case</span> VK_NUMPAD3: <span class="keywordflow">return</span> CAM_MOVE_DOWN;      </div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;</div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;        <span class="keywordflow">case</span> VK_HOME:   <span class="keywordflow">return</span> CAM_RESET;</div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;    }</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;    <span class="keywordflow">return</span> CAM_UNKNOWN;</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;}</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;</div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;<span class="keywordtype">void</span> base_camera::reset()</div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;{</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;    setViewParams( m_vDefaultEye, m_vDefaultLookAt );</div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;}</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;</div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160; </div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;}</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;<span class="preprocessor">#endif // #ifdef WIN32</span></div>
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